Question
In a school, 30 boys scored an average of 76 marks while
40 girls scored an average of 88 marks. What is the average marks of all students together? (Round off your answer to the nearest integer)Solution
ATQ,
Required average = (30 × 76 + 40 × 88) ÷ (30 + 40) = (2,280 + 3,520) ÷ 70 = (5,800 ÷ 70) ~ 83
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